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प्रश्न
Boiling of egg results in ______ change.
विकल्प
a reversible
an irreversible
उत्तर
Boiling of egg results in an irreversible change.
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संबंधित प्रश्न
It is difficult to cook vegetables on hills and mountains. Explain the reason.
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Reason: The process of conversion of water vapours to liquid by cooling the vapours is called condensation.
Water into steam on heating is called freezing.
Choose the correct statement of the following
The boiling points of diethyl ether, acetone and n-butyl alcohol are 35°C, 56°C and 118°C respectively. Which one of the following correctly represents their boiling points in kelvin scale?
Which condition out of the following will increase the evaporation of water?
A sample of water under study was found to boil at 102°C at normal temperature and pressure. Is the water pure? Will this water freeze at 0°C? Comment.
____________ is the change of solid state directly to vapour state without going through the ____________ state.
The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called ____________.
Assertion (A): Burning of a candle is considered a physical as well as chemical change.
Reason (R): Melting of wax is a physical change melted wax turns into vapours and then bums which is a chemical change.
